package chapter03.Example04;
class Students{
    private String name;// 声明姓名属性
    private int age;// 声明年龄属性
    public String getName() {
    return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        if (age<0) {
            System.out.println("您输入的年龄有误！");
        }else{
            this.age = age;
        }
    }
    public  void read() {
    System.out.println("大家好,我是"+name+",年龄"+age);
    }
}
    public class Example04 {
        public static void main (String[] args) {
            Students stu = new Students ();// 创建学生对象
            stu.setName ("张三");// 为对象的name属性赋值
            stu.setAge (-18);// 为对象的age属性赋值
            stu.read (); // 调用对象的方法
        }
    }